manu,I had gone thru same situation as you are undergoing now.I Know how hard it is to stop tears,Well everthing is in hand of destiny.So be there for your mom,Motivate her and Hope for the best.
As far as treatment is consider in India you might be knowing TATA MEMORIAL HOSP is best.Doctors there are very supportive.
Hoping that urs mother condition improves
pranjal